P1 bringup: Pulldown on HMC7044 SDATA
SDATA on the HMC7044 is bidirectional therefore should be pulled up but its pulled down on the board. We should remove R17 or make it a pullup. For bringup I've removed R17 and added a pullup in the FPGA. If R17 was added to stop invalid data being sent to HMC when e.g FPGA is being configured, we can achieve same thing by pulling up the CS (HMC_SLEN on schematic) and/or reset.